Final answer:
The endocrine and nervous systems are interrelated; each system affects the other. They communicate using chemical signals and work together to regulate the body's physiology.
Step-by-step explanation:
The endocrine and nervous systems are interrelated; each system affects the other. Both systems use chemical signals to communicate and regulate the body's physiology. The endocrine system releases hormones that act on target cells, while the nervous system releases neurotransmitters or neurohormones that regulate neurons, muscle cells, and endocrine cells. The two systems work in a coordinated manner to maintain homeostasis and respond to environmental changes.